Merge branch 'selhorn-experiment-badge' into 'master'

Updated Experiment badge

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/130355



Merged-by: Phillip Wells <pwells@gitlab.com>
Approved-by: Phillip Wells <pwells@gitlab.com>
Co-authored-by: Suzanne Selhorn <sselhorn@gitlab.com>